摘要
采用三因素二次通用回归旋转设计，对开封沙区影响西瓜产量的氮肥、磷肥、钾肥的用量进行了定量研究。建立了西瓜产量函数模型：通过模型解析选优，确定了每公顷目标产量≥６１５００ｋｇ、≥６００００ｋｇ、≥５６２５０ｋｇ及最大经济效益的施肥组合方案；明确了模型因素效应顺序（氮肥＞钾肥＞磷肥）和高产与施肥的关系，以及各肥料产量因素间的交互作用效应。
The application quantity of N,P,K fertilizers, which affected water melon yield in sandy region in Kaifeng was quantitatively studied with quadratic regression analysis of 3 factors.The function model of water melon yield was established, and based on the optimum of the model analysis, the combination scheme of fertilizer application for target yield of more than or equal to 61500 kg/hm 2 ,60000 kg/hm 2 , and 56250 kg/hm 2 , and the maximum economic benefits were defined. The sequence of the model factor effects (N>K>P) and the relation between high yield and fertilizer application, and the mutual functions among the yield factors of various fertilizers.
出处
《干旱地区农业研究》
CSCD
北大核心
1997年第3期42-47,共6页
Agricultural Research in the Arid Areas
关键词
西瓜
施肥量
产量
函数模型
优选方案
water melon, fertilizer application quantity, yield,function model, optimum scheme
